the.com/hiccup

means An involuntary spasm of the diaphragm that snaps the vocal cords shut, producing that sharp 'hic' sound — or, by extension, a small temporary problem.

from An imitative word: 'hiccup' is the sound itself, dressed up in spelling. The earliest English forms were things like 'hicket' and 'hickock,' all trying to capture that catch in the throat. The current spelling 'hiccup' came later, and the variant 'hiccough' is a fanciful respelling — someone decided the sound resembled a cough and rebuilt the word to match, though it has nothing to do with coughing. Echoic words like this pop up across many languages, each nation hearing its own little hic.